/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.catalina.ant;

import org.apache.tools.ant.BuildException;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

public abstract class AbstractCatalinaCommandTask extends AbstractCatalinaTask {

	/**
	 * The context path of the web application we are managing.
	 */
	protected String path = null;
	/**
	 * The context version of the web application we are managing.
	 */
	protected String version = null;

	public String getPath() {
		return (this.path);
	}

	public void setPath(String path) {
		this.path = path;
	}

	public String getVersion() {
		return (this.version);
	}

	public void setVersion(String version) {
		this.version = version;
	}


	// --------------------------------------------------------- Public Methods

	/**
	 * Create query string for the specified command.
	 *
	 * @param command Command to be executed
	 * @return The generated query string
	 * @throws BuildException if an error occurs
	 */
	public StringBuilder createQueryString(String command) throws BuildException {
		StringBuilder buffer = new StringBuilder();
		try {
			buffer.append(command);
			if (path == null) {
				throw new BuildException("Must specify 'path' attribute");
			} else {
				buffer.append("?path=");
				buffer.append(URLEncoder.encode(this.path, getCharset()));
				if (this.version != null) {
					buffer.append("&version=");
					buffer.append(URLEncoder.encode(this.version, getCharset()));
				}
			}
		} catch (UnsupportedEncodingException e) {
			throw new BuildException("Invalid 'charset' attribute: " + getCharset());
		}
		return buffer;
	}
}